Where can i see live demo of ps4 pro with 4k hdr tv in klang valley?

Nope, no difference. Unlike past consoles (or Nintendo's), there is no region lock. So the only difference is warranty. Which in my 25 years of gaming, never had the chance to claim. Even if my console spoil it's always way past warranty period... 

There is one small difference. I just remembered... the X and O could be swapped. Asia regions usually have O as confirm and Western countries have X as confirm. Small adjustment but some might feel is important as well. There's only one game out of like the thousands that have come out with an issue of X/O, it's Trine 2 on the PS3. The US region has different confirm and cancel but the menus for some reason did not swap the buttons so you could not level up. But I think for PS4 all these issues are mitigated by having the controller inputs based on the game and not on system. There's another game that I was streaming that I was complaining about weird button inputs... can't remember what now. Will remember later.

Just remembered... Dishonored 1 on the PS3 didn't change the button prompt from what was shown on screen if you played the R1 game on an SEA console.

hhmm...i guess not a good time to get ps4 pro now...with all the issues surfacing right now

Current 4K TV got refresh at least 60Hz if not 120/240Hz.
Is there any 30fps & 60fps gaming noticeable different for 4K TV?